> git blame breakage is no argument here, as the initial import damages
> that anyway.

No, that's still useful, since it shows things that've been around
since the beginning and that haven't been tidied up.

> Usually everyone agrees on 80 characters

80 characters is for people who use dumb terminals that don't support
any other size. It's annoyingly restrictive for anything else.

> Derivating from that must be justified better than "it fits my screen".

No, changing it from what it is currently requires better
justification than "a piece of hardware that no-one's used for twenty
years does it that way".
Also, please stop stealthily changing bits of wrapping as you go
along. That's even worse.
--
Ciaran McCreesh